摘要:【目的】研究不同栽插株數對水稻“Y兩優911”生育進程和產量的影響?!痉椒ā恳詢上惦s交水稻“Y兩優911”為材料,試驗設計6組不同栽插株數,分別為2株/穴(TI)、3株/穴(T2)、4株/穴(T3)、5株/穴(T4)、6株/穴(T5)、7株/穴( T6),調查6種處理對水稻“Y兩優911”生育進程和農藝性狀的影響?!窘Y果】不同栽插株數條件下,產量以栽插4株/穴的T3( 10426.45 kg/hm2)和5株/穴的T4( 10657.94 kg/hm2)處理為較高,顯著高于其它處理.不同栽插株數對水稻“Y兩優911”千粒重無大的影響,每穗總粒數從大到小為T2>TI>T3>T4>T5>T6,有效穗則表現為T6>T5>T4>T3 >T2>T1?!窘Y論】不同栽插株數下,影響水稻“Y兩優911”產量的主要因素是有效穗數,建議生產上機插株數以每穴4株或5株為宜,有利于協調有效穗數、每穗總粒數、結實率、千粒重等產量因子而獲得高產。
關鍵詞:水稻;Y兩優911;生育進程;產量
中圖分類號:S511
文獻標識號:A 文章編號:1003-4374(2021)06-0014-04
Effects of Different Planting Number on Fertility Process and Yield of Rice"Y Liangyou 911"
Shen Ping,Zhou Guo-lie
?。?Yulin Branch of Guangxi Academy of Agricultural Sciences/Yulin Academy of Agricultural
Sciences, Yulin, Guangxi 537000,
China)Abstract: [Objective] To study the effects of different planting number on fertility process and yield ofrice "Y Liangyou 911". [Method] Applying two-line hybrid rice "Y Liangyou 911" as material,sixgroups of different plant numbers were designed, which were 2 plants/hole (T1), 3 plants/hole (T2). 4plants/hole (T3 ) , 5 plants/hole (T4 ) , 6 plants/hole ( T5 ) , 7 plants/hole ( T6) , respectively. The effectsof 6 treatments on the fertility process and agronomic traits of rice "Y Liangyou 911" were investigated.[ Result] Under the condition of different planting number, the yield of T3 (10426.45kg/hm2) with 4plants/hole and T4 ( 10657.94 kg/hm2) with 5 plants/hole was higher than that of other treatments. Thethousand grain weight of "Y Liangyou 911" was not significantly affected by diff'erent planting number.The total number of' grains per spike from large to small was T2> T1> T3> T4> T5> T6: the effectivespike was presented as T6> T5> T4> T3> T2> T1. [Conclusion] Under the different planting number,the main factor affecting the yield of rice "Y Liangyou 911" is the effective spike number. It isrecommended that the number of seedlings in production is appropriate t0 4 0r 5 seedlings per hole,which is conducive to coordinating the number of effective ears. total grains per spike, firmness rate.thousand weight and other yield factors to obtain high yield.
Keywords: rice. Y Liangyou 911. fertility process. yield
玉林市是V西重要的糧食生產基地,是重要的雙季稻高產區,優質水稻常年播種面積達25.33萬公頃。[1]隨著玉林市產業結構調整和區域經濟快速發展,農村勞動力轉移速率提高,農忙時節勞動力矛盾日漸突出[2],現階段在玉林市水稻生產中存在用種量少、種植密度偏稀疏、基本苗不夠等問題。不同的栽插株數下會影響水稻生長發育和產量,適宜的栽插株數有利于提高水稻產量?!癥兩優911”是湖南袁創超級稻技術有限公司用“Y58S”作母本,“創恢911”作父本配組育成的兩系雜交中秈品種[3],2020年通過廣西壯族自治區農業農村廳引種備案(桂)引種[2020]第1號。為了掌握“Y兩優911”水稻品種適宜的栽插密度,協調水稻個體與群體之間的關系,充分挖掘雜交稻高產潛力,于2020年晚稻在玉州區仁東鎮張村開展了不同栽插株數對“Y兩優911”生育進程和產量影響的試驗,為生產上高產栽培提供參考。
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